Over the weekend, I came across this article: Matchmaker, Matchmaker, Make Me A Spreadsheet | FiveThirtyEight and it had two graphics at the beginning. ( If you are interested read the whole article, but after those two graphics it is all very fan boi-sh nonsense about Christian Rudder & big data ).
Made me think about the conversations we have here. Apparently, men going for younger women is fairly universal.
Except it is not a poll. He mined the data from a match-making website ( OKCupid ) and published the findings on his blog( OKTrends ). If it were a poll in cosmopolitan or vogue or some such, you could ignore it and blame it on sampling. The point he was trying to make with this is, you can use Big Data to know about ourselves as a society in a more reliable/scientific way than any polls out there.